Study of the Characteristics of Electrodynamic Drive of Compression Engine for Condenser Energy-Storage Welding of Small Parts Compounds

Purpose of research. Changing the compressive force according to an initially set program is one of the most effective technological methods for condenser energy-storage welding of small parts compounds with an “open” contact area, widely used in the manufacture of products of radio electronic and electrical industries. An expedient constructive solution to this approach is the use of a programmable compression engine in the welding unit of the combined drive. In such a drive, the required, relatively small, initial static compression force of parts is carried out by a spring of low rigidity. The sharp increase in the speed of movement of the electrode according to a given program is produced by an electric power drive - electromagnetic or electrodynamic- at the time of reaching the welding temperature in contact. In contrast to the electromagnetic drive the results of the study of the dynamic properties and its control characteristics are widely covered in literature, the studies concerning the characteristics of an electrodynamic drive, favorably differing in dynamic properties from the electromagnetic system, are not carried out in sufficient volume. In this regard, this paper is devoted to the study of the adjustment characteristics of a programmable pulse of dynamic force developed by an electrodynamic drive powered by an autonomous capacitor energy dispenser and a welding type transformer.  

Methods. This article has developed an experimental test bed and an original technique for studying the adjustment characteristics of pulse of the programmable force of electrodynamic drive .The main parameters of these characteristics have been investigated here as well.

Results. The results of the research given in the article show that variation of the capacitance and charging voltage of battery of the power supply capacitors allows the amplitude value of the dynamic force to be varied within wide limits and, to a lesser extent, affects the time of its rise to the maximum and the total operation time of the force.

Conclusion. The use of an energy capacitor dispenser as a source of power for an electrodynamic drive will make it possible to regulate the pulse geometry of an electrodynamic force and thus program its dynamic properties.

condenser energy-storage welding, compression engine, electrodynamic drive, experimental test bed, energy capacitor dispenser, research technique, dynamic force pulse, adjustment characteristics

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